Pith Number

pith:4ST5CYMY

pith:2022:4ST5CYMYSLZBILFGUFROPBISQD

not attested not anchored not stored refs pending

The Role of Placebo Samples in Observational Studies

Bo Zhang, Shuxiao Chen, Ting Ye

arxiv:2205.10761 v2 · 2022-05-22 · stat.ME · stat.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ST5CYMYSLZBILFGUFROPBISQD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T04:36:49.327932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4a7d1619892f2142ca6a162e7851280f4a794506b281b149276d5d9fb04fecf

Aliases

arxiv: 2205.10761 · arxiv_version: 2205.10761v2 · doi: 10.48550/arxiv.2205.10761 · pith_short_12: 4ST5CYMYSLZB · pith_short_16: 4ST5CYMYSLZBILFG · pith_short_8: 4ST5CYMY

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4ST5CYMYSLZBILFGUFROPBISQD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e4a7d1619892f2142ca6a162e7851280f4a794506b281b149276d5d9fb04fecf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "640c00881695ddf3e46d928d6f6750448b5e154fdc912960a379ed645d11f3c9",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2022-05-22T06:23:21Z",
    "title_canon_sha256": "b4b26e1ed42494e6976b273c9b52061aa9cb56cc16b8af2b40e5555a4ac424d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.10761",
    "kind": "arxiv",
    "version": 2
  }
}